Replace CONTROL_BACKGROUND and DETACHED_BOOKMARK_BAR_BACKGROUND by COLOR_NTP_BACKGROUND

chrome/browser/ui/webui/ntp/ntp_resource_cache.cc

Index: chrome/browser/ui/webui/ntp/ntp_resource_cache.cc
diff --git a/chrome/browser/ui/webui/ntp/ntp_resource_cache.cc b/chrome/browser/ui/webui/ntp/ntp_resource_cache.cc
index e67d28ea4152f4aa4785c2b8c15b344cbd83a248..cf6dff4e99a1d5b3663f1ae1d523743e475b4c3f 100644
--- a/chrome/browser/ui/webui/ntp/ntp_resource_cache.cc
+++ b/chrome/browser/ui/webui/ntp/ntp_resource_cache.cc
@@ -506,10 +506,9 @@ void NTPResourceCache::CreateNewTabIncognitoCSS() {
       ThemeService::GetThemeProviderForProfile(profile_);
 
   // Get our theme colors
-  SkColor color_background =
-      tp.HasCustomImage(IDR_THEME_NTP_BACKGROUND)
-          ? GetThemeColor(tp, ThemeProperties::COLOR_NTP_BACKGROUND)
-          : SkColorSetRGB(0x32, 0x32, 0x32);
+  SkColor color_background = ThemeProperties::GetDefaultColor(
+      ThemeProperties::COLOR_NTP_BACKGROUND,
+      !tp.HasCustomImage(IDR_THEME_NTP_BACKGROUND));
 
   // Generate the replacements.
   ui::TemplateReplacements substitutions;